Grey ( Poly ) To PEX Connections - Plumbing - DIY Home Improvement | DIYChatroom

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Old 05-31-2010, 05:58 PM   #1
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Grey ( Poly ) to PEX connections

Hi, I have a 20 yr old house with what I assume to be the grey Poly plumbing. I want to plumb in a 1/2 bath in the basement and have no trouble getting a cold pipe into which I can put a Poly to PEX adaptor, however, the Hot water is another story. It looks like I will have to cut a Hot pipe in two, and put in a TEE to get the feed to the wash basin. My problem is that so far I can't seem to locate a Tee, which will allow the connection between the two grey Poly pipes but have a PEX acceptable outlet so that I can run it to the new sink. Is there such a thing and if not, is there any way around this? Many thanks in advance for your help!


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Old 05-31-2010, 07:39 PM   #2
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Shark bite T will work. All the big box stores carry them.


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Old 05-31-2010, 07:54 PM   #3
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I assume by poly you mean PB pipe. If you do not want to use the Sharkbite. Cut a 12" section out of the PB, use 2 PB to PEX adapters with a 1 foot section of PEX to reconnect. Cut the PRX in half and put in a PEX tee.
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Old 05-31-2010, 08:04 PM   #4
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I'd be more apt to using the sharkbite tee. Those polybutelene fittings and crimp rings and pipe are known to fail... why put in another one thats bound to fail anyway?
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Old 05-31-2010, 09:15 PM   #5
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Many thanks for all the replies. So far all the crimp connections have served me well, so I have no worries on that front. I think the two PB to PAX adaptors running into the PAX 12" + Tee, sounds like a good plan ( Never thought of that! D'OH!)

Again, many thanks Guys!
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